aluminum composite panels and columns installation ... installation step 3: second panel alignment and installation step 5: cleaning. datum line set level for all panels datum line set plumb for all panels start point a-1 set first panel level plumb and allow for proper installation of all proceeding panels. 1. screw attachment component #_____ first (see drawing). 2. after panel is set and secured screw attachment _____. note: start point varies with project. 1 2